EP2994964A1 - Zündeinheit für eine brennkraftmaschine - Google Patents
Zündeinheit für eine brennkraftmaschineInfo
- Publication number
- EP2994964A1 EP2994964A1 EP14726899.9A EP14726899A EP2994964A1 EP 2994964 A1 EP2994964 A1 EP 2994964A1 EP 14726899 A EP14726899 A EP 14726899A EP 2994964 A1 EP2994964 A1 EP 2994964A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- spark
- electrodes
- ignition device
- ignition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 50
- 239000000203 mixture Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 238000009760 electrical discharge machining Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000009760 functional impairment Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/46—Sparking plugs having two or more spark gaps
- H01T13/462—Sparking plugs having two or more spark gaps in series connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/24—Sparking plugs characterised by features of the electrodes or insulation having movable electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/40—Sparking plugs structurally combined with other devices
- H01T13/42—Sparking plugs structurally combined with other devices with magnetic spark generators
Definitions
- the present invention relates to an ignition unit for an internal combustion engine.
- the present invention relates to an improved
- Electrode arrangement for arrangement within a combustion chamber of an internal combustion engine.
- Ignition units for spark-ignited internal combustion engines are known in the art. Electrical energy, often stored intermediately by means of an inductance, breaks through the combustion chamber volume between two electrodes, as a result of which the ignitable mixture in the combustion chamber is ignited. Usually, the two electrodes are arranged fixed to each other. As a result, a likewise fixed spark gap between the electrodes is predefined. In order to ignite the mixture successfully, must at least partially ignitable mixture in the field
- Spark gap present which has only a stochastically distributed spatial variance.
- the ignition unit has a first electrode and a second electrode, wherein the ignition unit is set up to provide a first ignition spark between the first electrode and the second electrode.
- the first electrode and the second electrode are adapted to be arranged within a combustion chamber or a combustion chamber of an internal combustion engine.
- the ignition unit may optionally include further elements for generating a first spark, as known in the art (e.g., in the form of an inductance and / or a transformer).
- Electrode is arranged movable relative to the first electrode.
- the second electrode relative to the ignition unit or to the first
- Electrode can be moved, rotated or swiveled. This can be done, for example, by means of an actuator (or “motor”), which is an optional component of the ignition unit and the second electrode after the electromagnetic
- the ignition unit is set up to strike through a predefined area of the combustion chamber in the course of a movement of the second electrode with the first ignition spark.
- the first electrode and the second electrode are arranged, the spark with respect to its longitudinal direction with a
- the ignition unit comprises a third electrode, wherein the third electrode and the second electrode are arranged to form a second ignition spark.
- a spark can also be generated between the third electrode and the second electrode, which spark may additionally and in particular exist at the same time as the first spark.
- the statements made above in connection with the first electrode can apply correspondingly to the third electrode.
- the second electrode can be so relative to first and / or third electrode, that the spark gap is moved or pivoted by a predefined area.
- the sum of the spark gaps describes an area predefined by the movement of the electrode or the electrodes within the combustion chamber.
- the second electrode is set up to contact the first electrode and / or the third electrode at the beginning of a movement.
- Combustion space between the second electrode and the first electrode and the third electrode made possible, which allows generation of a spark as a break spark by the second electrode from the first electrode and / or the third electrode is removed. In this way, reduces the required for the generation of the spark ignition voltage and
- an electromagnetic and / or an electromechanical actuator is provided and arranged to move the second electrode.
- the actuator can use an electromechanical and / or electromagnetic action principle for moving the second electrode.
- a piezoceramic can also be used.
- a control unit may be provided for supplying the actuator with electrical energy in accordance with a time sequence adapted to the ignition time. This control can for example be taken over by an engine control unit which controls the internal combustion engine.
- the three electrodes are arranged such that the
- the second electrode is in contact with the first and third electrodes prior to its movement.
- the first electrode and the third electrode have a common constriction, at which the smallest distance between the two electrodes is arranged from each other.
- a bottleneck offers a predefined position for the formation of a common spark.
- Material parameters at the bottleneck can be chosen such that a particularly high spark erosion resistance exists.
- the second electrode is configured such that it is convex in the direction of the contact points with the first electrode or the third electrode
- the electrodes are designed such that the sparks have at each of its two ends a sparking point which is located in the
- the second electrode moves on the surface of the associated electrode, it moves toward a throat.
- a spark may be formed between two electrodes at a first time, the length of which decreases in the course of the movement of the second electrode as the spark gaps move along the surfaces of the electrodes.
- the movement of the second electrode can either ensure that an ignition spark occurs at a position between two electrodes at which the two electrodes do not have a slightest distance from one another.
- the spark may be disposed at a bottleneck at a particular time, which, however, itself migrates together with the spark over the surface of the electrodes.
- This refinement also makes it possible to reduce spark erosion at one and the same point of the combustion chamber for igniting the mixture at different points in space. More preferably, the three electrodes are configured and through the
- the first, the second and the third electrode are advantageously arranged in such a way to each other and the second electrode additionally shifted such that, for example, two
- Scenario increases the number of places or the volume in which an ignition is possible.
- the first electrode may be electrically connected to a negative pole and the third electrode may be electrically connected to a ground of a voltage source.
- the second (movable) electrode may have an electrical potential located between the negative pole and the electrical ground, which approximately halves the voltage between the negative pole and the electrical ground. This allows a particularly simple merging of two
- an inductance can be provided between the negative pole and the first electrode, which is set up to form a magnetic field by means of which the required spark energy can be intermediately stored.
- the arrangement of the electrical potentials described above can of course be reversed without functional restrictions, so that the first electrode is electrically connected to a positive pole of a voltage source and the third electrode is electrically connected to the electrical ground (or another corresponding electrical potential).
- the second electrode is cylindrical or shaped like a stem.
- a stem-shaped, for example, a cross-sectional area is understood in which a comparatively narrow shaft merges into a wider, predominantly convex end region.
- Such a die provides a variety of possible spark gaps with adjacent electrodes which may have bottlenecks in conjunction with the convex end region.
- the second electrode may have a flat, pointed, conical or curved end face, which faces the other two electrodes.
- the first electrode and the third electrode may be cylindrical, cuboid, L-shaped or arcuate.
- the abovementioned embodiments of the electrode surfaces are suitable options for allowing spark gaps to travel through the combustion chamber in the course of a movement of the second electrode and for achieving reliable ignition and avoiding spark erosion.
- the first and third electrodes are arranged on a lateral surface of a virtual hollow cone, wherein the second electrode is at least partially disposed within the virtual hollow cone. This allows avoidance of direct and undesired spark gaps between the first and third electrodes before the second electrode has left a predefined position between the first and third electrodes.
- the ignition unit is configured to allow a sparking point on the first and / or the second electrode to migrate in the course of a movement of the second electrode a predefined distance along a surface of the first electrode and / or the second electrode.
- the movement of the second electrode moreover results in at least one
- Funkenfu ßddling travels during the existence of the spark a predefined way on the surface of the first and / or the second electrode.
- the erosion of the electrode surface is reduced or distributed over a larger surface area, which can be avoided or postponed for the life of the ignition unit relevant damage.
- the surfaces of the first and the second electrode to each other can be configured such that in the course of a movement of the second electrode different Oberfumbleenyake have a shortest distance from each other.
- the position of two associated surface points, which define a shortest distance between the electrodes at least with respect to a predefined section, is dependent on the current position of the second electrode. This can be realized by a suitable choice of the electrode geometry and / or by the trajectory performed by the second electrode. The same applies to the second electrode and the third electrode.
- the space located between the first electrode and the third electrode is open over a large area to the combustion chamber.
- a space arranged between the electrodes has a comparatively small volume in relation to its coupling surface in the direction of the combustion chamber. This can be achieved, for example, by compact (e.g., cylindrical) configurations of the individual electrodes. In this way it is ensured that the electrodes are on the one hand washed by as much gas mixture as possible, on the other hand, the mechanical stress of the
- Electrodes largely prevented by expansions of the space formed between them in the course of the ignition process.
- the heat of combustion can damage or
- the three electrodes have sections inside the combustion chamber, while the actuator of the ignition device is arranged outside the combustion chamber. In this way, the actuator can be protected from the thermal, chemical and mechanical stress within the combustion chamber.
- Figure 1 is a block diagram for explaining the generation of a
- Figure 2 is a schematic diagram for explaining the generation of a
- Figure 3 is a schematic diagram of a spatial arrangement of a fixed and a movable electrode in a contacted state
- Figure 4 is a schematic diagram of a spatial arrangement of a fixed and a movable electrode in a separate state; 5a to 5e a sequence of schematic diagrams, visualizing the fusion of two sparks between three electrodes by movement of an electrode;
- Figure 6 is a schematic diagram of an alternative electrode geometry with a linear converging gap
- FIG. 7 shows a schematic diagram of an alternative electrode geometry with a gap converging along a conical lateral surface
- FIG. 8 shows a schematic diagram of an alternative electrode geometry with a gap converging along a hollow spherical surface.
- FIG. 1 shows an electrical energy source U1, which is set up to drive a current i1 through an inductance L1.
- a switch S1 is closed behind the inductance L1 by means of an actuator A1 to ground.
- the switch S1 comprises a first electrode E1 and a second electrode E2.
- both electrodes E1, E2 are in electrical contact with each other.
- the inductance L1 is charged by the current flow i1 with magnetic energy.
- FIG. 2 shows the arrangement shown in FIG. 1 after opening the switch S1 by means of the actuator A1. Due to the now open switch S1, an ignition spark F has formed between the now spatially separated electrodes E1 and E2. Its energy is provided by the magnetic field of the inductance L1. If the switch S1 or the arrangement of the electrodes E1, E2 is located within a combustion chamber II and ignition mixture is ignitable in the region of the ignition spark F, the ignition spark can be used to ignite the mixture.
- FIG. 3 shows a schematic diagram of a possible spatial configuration of two electrodes E1, E2.
- the first electrode E1 is at least partially (Within the combustion chamber II) arcuately executed and is contacted at a distal end by a movable second electrode E2 at a contact point 1 1.
- the second electrode E2 is movably supported in the direction of an arrow P, so that a distance between the first electrode E1 and the second electrode E2 can be established.
- the second electrode E2 is set up as an actuator by means of a magnetic core M and a coil Si surrounding the magnetic core M, via a voltage signal u (t)
- Voltage source 12 to be moved in a predefined manner.
- the actuator is arranged outside the combustion chamber, so that it is protected against thermal, chemical and mechanical influences.
- FIG 4 shows the arrangement shown in Figure 3, after the second
- Electrode E2 has been moved in the direction of arrow P. At the contact point 1 1 shown in Fig. 3, a constriction 10 has now emerged at which the electrodes E1, E2 have a smallest distance from each other.
- FIG. 5a shows an embodiment of an ignition arrangement of an ignition unit according to the invention, comprising a first fixed electrode E1, a second movable electrode E2 and a third stationary electrode E3.
- the first fixed electrode E1 a fixed electrode
- E2 a second movable electrode
- E3 a third stationary electrode
- the electrode E1 and the third electrode E3 have two substantially parallel sections 13, 14, at the outer / distal end of which they approach each other through an essentially gable-shaped structure 15, 16.
- the second electrode E2 is in electrical contact with the end portion (15) of the first electrode E1 and the end portion (16) of the third electrode E3.
- the second electrode E2 has a the end portions 15, 16 facing convex surface, which is reminiscent of the top of a lens.
- a (not shown) power of the ignition unit flows through the electrical connection between the first electrode E1 and the second electrode E2 and the second electrode E2 and the third electrode E3.
- the current through the first electrode E1 and the second electrode E3 is caused by a voltage source U1, wherein in series with the voltage source U1, an inductance L
- the movement of the second electrode E2 is made possible by two coils Si and S 2 . Both are arranged around a housing 18 outside of the combustion chamber II. Within the housing 18 is a magnetic core M, which is mechanically, preferably rigid, coupled to the second electrode E2.
- a current flow through the first coil Si effected according to the electrodynamic principle, a movement of the magnetic core M within the magnetic field passing through the coil Si in a first direction. This may, for example, in the direction of the return spring 17, which is compressed in the course of such movement and generates a restoring force.
- a current flow through the second coil S 2 This is set up, depending on the direction of a current flow as well as the return spring 17 to develop a force effect, on the basis of which the second electrode E2 strives in the direction of the constriction 10.
- An alternative use or control of the second coil S 2 allows an addition of the electromagnetic forces of the first coil Si and the second coil S 2 and thus a large stroke with largely linear force development and additionally a use of two independently generated currents.
- Another advantage of using a second coil S 2 (in addition to or instead of the return spring 17) is its centering effect on a magnetic core M.
- the currents i1, i2 are provided by control units (not shown).
- FIG. 5b shows the arrangement shown in Figure 5a, after the second electrode E2 has been removed in the direction of arrow P from the gable structure of the end portions of the first electrode E1 and the third electrode E3.
- a first spark F1 has a region between them in the region of lowest
- Figure 5c shows the arrangement shown in Figure 5b, after the second electrode E2 has been further removed in the direction of the arrow P from the end portions of the first electrode E1 and the third electrode E3.
- Ignition spark F1 and the second spark F2 are in the direction of the smallest distance between the first electrode E1 and the third
- Electrode E3 that is wandered in the direction of the arrows P1 and P2.
- FIG. 5d shows the sequence of the movement of the second electrode E2 in the direction of the arrow P.
- the spark gaps FF1 2, FF22 arranged at the second electrode E2 have met in response to which the first spark F1 and the second spark F2 become a single spark F are merged. Since the now V-shaped ignition spark F strives to join the In order to shorten the energy minimum principle accordingly, the situation shown in FIG. 5e arises.
- Fig. 5e the spark has moved with its base points to those points of the first electrode E1 and the third electrode E3, which have the smallest distance from each other. Only this spark gap fulfills the energy minimum principle for the ignition spark F.
- FIGS. 5a to 5e it can be seen which surface area the ignition sparks F1, F2 or the ignition spark F have crossed because of the movement of the second electrode E2.
- a stationary spark gap like the
- FIG. 6 shows an alternative electrode geometry to the electrode arrangement shown in FIG. The electrode sections in the combustion chamber II
- Electrodes E1, E3 are designed, for example, cylindrical or rod-shaped, wherein the cross section may be circular, elliptical or rectangular. Both approaches to an imaginary by the actuator or the direction of movement of the second electrode E2 axis in the direction of the combustion chamber linearly to each other. The operation of the arrangement is identical to that in
- FIG. 7 shows an alternative arrangement and design of three electrodes E1, E2, E3.
- a first electrode E1 and a third electrode E3 are helically arranged along a conical (or "cone-shaped") envelope surface
- a second electrode E2 is arranged, which first contacts both electrodes E1, E3 in the illustrated constellation.
- the spark F t travels upward in the cone in the direction of the tip S, wherein it makes a rotation about the axis of rotational symmetry of the cone ', as indicated by the arrow P3.
- the ignition spark F t has "screwed" the electrode spiral further upwards, so that it now has a shorter length than before as ignition spark F t2 .
- FIG. 8 shows an alternative arrangement of three combustion chamber electrodes E1, E2, E3.
- the first electrode E1 and the third electrode E3 are arranged substantially symmetrically to the symmetry axis y and symmetrically to the axis of movement of the second electrode E2.
- the first electrode E1 and the third electrode E3 have two local bottlenecks 10a, 10b, between which both electrodes E1, E3 have concave sections.
- the distance between the electrodes in a region between the local bottlenecks 10a, 10b increases in a hollow shape.
- a movable second electrode E2 is shown in three possible positions a), b), c).
- the second electrode E2 in this case has a substantially spherical end portion which has a smaller radius than the cavity formed between the first electrode E1 and the third electrode E3. In this way, it is possible that the second electrode E2 in the position a) has a respective contact point 1 1, 12 with the first electrode E1 and the third electrode E3.
- the second electrode E2 is located between the positions a) and b), in which it has a bottleneck inter alia with those points of the concave electrode surfaces, which have a maximum distance from the symmetry axis y.
- Electrode E1 and the second electrode E2 and between the third electrode E3 and the second electrode E2 are generated. If now the second electrode E2 moves from the position a) to the position b), the respective wander
- Electrode E2 is reversed until finally in position a) again in
- the spark gap is displaced, rotated, swiveled or otherwise modified in a predefined manner relative to a second point in time at a first point in time in order to break through different combustion chamber volumes at different times. The likelihood of successfully igniting an ignitable mixture is thereby increased, so that lean
- Mixtures or less homogeneous mixtures can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013208547 | 2013-05-08 | ||
| DE102014208501.2A DE102014208501A1 (de) | 2013-05-08 | 2014-05-07 | Zündeinheit für eine Brennkraftmaschine |
| PCT/EP2014/059402 WO2014180937A1 (de) | 2013-05-08 | 2014-05-08 | Zündeinheit für eine brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2994964A1 true EP2994964A1 (de) | 2016-03-16 |
| EP2994964B1 EP2994964B1 (de) | 2020-02-19 |
Family
ID=51787754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14726899.9A Active EP2994964B1 (de) | 2013-05-08 | 2014-05-08 | Zündeinheit für eine brennkraftmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10177538B2 (de) |
| EP (1) | EP2994964B1 (de) |
| CN (1) | CN105164877B (de) |
| BR (1) | BR112015028039B1 (de) |
| DE (1) | DE102014208501A1 (de) |
| WO (1) | WO2014180937A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014208501A1 (de) * | 2013-05-08 | 2014-11-13 | Robert Bosch Gmbh | Zündeinheit für eine Brennkraftmaschine |
| FR3060222B1 (fr) * | 2016-12-09 | 2019-05-17 | Vianney Rabhi | Bougie d'allumage a electrode-navette |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US647946A (en) * | 1899-06-26 | 1900-04-24 | Walter H Cotton | Electric igniter for gas-engines. |
| GB190900868A (en) * | 1909-01-13 | 1909-05-27 | Percy Richard Julius Willis | Improved Ignition Device for Internal Combustion Engines. |
| US1096459A (en) * | 1910-07-25 | 1914-05-12 | Cutler Hammer Mfg Co | Ignition device. |
| JPS5221539A (en) | 1975-08-09 | 1977-02-18 | Kiyoshi Yamakawa | Firing device of an internal combustion engine |
| US4757788A (en) | 1987-03-06 | 1988-07-19 | Sylvan Simons | Ignition system |
| CN2168964Y (zh) * | 1993-09-23 | 1994-06-15 | 王妙根 | 多功能火花塞调节器 |
| US5704321A (en) * | 1996-05-29 | 1998-01-06 | The Trustees Of Princeton University | Traveling spark ignition system |
| CN1294430A (zh) * | 1999-10-23 | 2001-05-09 | 吕秋海 | 火花塞 |
| DE102014208501A1 (de) * | 2013-05-08 | 2014-11-13 | Robert Bosch Gmbh | Zündeinheit für eine Brennkraftmaschine |
-
2014
- 2014-05-07 DE DE102014208501.2A patent/DE102014208501A1/de not_active Withdrawn
- 2014-05-08 WO PCT/EP2014/059402 patent/WO2014180937A1/de not_active Ceased
- 2014-05-08 BR BR112015028039-0A patent/BR112015028039B1/pt not_active IP Right Cessation
- 2014-05-08 US US14/889,570 patent/US10177538B2/en active Active
- 2014-05-08 EP EP14726899.9A patent/EP2994964B1/de active Active
- 2014-05-08 CN CN201480025797.9A patent/CN105164877B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014180937A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105164877A (zh) | 2015-12-16 |
| BR112015028039A2 (pt) | 2017-09-12 |
| US10177538B2 (en) | 2019-01-08 |
| DE102014208501A1 (de) | 2014-11-13 |
| US20160087412A1 (en) | 2016-03-24 |
| CN105164877B (zh) | 2018-10-26 |
| EP2994964B1 (de) | 2020-02-19 |
| WO2014180937A1 (de) | 2014-11-13 |
| BR112015028039B1 (pt) | 2021-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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